ETD 4.0 Pressure Washer Rotating Turbo Nozzle 4000 PSI 3 GPM with 1/4" Quick ... Maximum Pressure: 4,000 PSI Gallons Per Minute: 4.0 Nozzle Orifice Size: 4.0 Maximum Operating Temperature: 212 F 1/4-inch steel, brass-plated Quick Connect plug.